Roller-bearing.



10i tn ease:

. PATENTED MAY 5, 1908. W S. SHAR-PNEGK.

"ROLLER BEARING.

APPLICATION FILED JAN. 26, 1906.

Jsassiasaaeisaa UNHIEE rarnrw wittnu s. SHARPNECK, or cuimico, ILLINOIS, ASSIGNOB re s. n, HASKELL, or cine-lice,

ILLINOIS. i

ROLLER-BEARING.

To all 20720272 it may concern:

Be itknown that I, 'ILLIAM S. SHARP- NECK, of Chicago, in the countv of Cook and State of lllinois, have inventeil'certain new and useful Improvements in Roller-Bearings, of-which the following is a specification. I

My nvention relates to roller bearings and has for its object to reduce the friction and thereby to increase the eiliciency and add to the wearing qualities of such bearin To this end my invention consi in the construction described in the soecitication, illustrated in the drawings, and more particularly pointed out in the appended claims.

Referring to the drawings: Figure. 1 is a side elevation of a nest of rollers. Fig. 2 is an end elevation thereof. Fig. 3 is a view in section of one of the rollers, the disks or washers being showir only at the left of the figure, while at the right of it is illustrated the cavity designed to receive disks or wash- .ers similar to those shown in position'at the left of the figure. Fig. 4 is a detail of the outer or end disks or washers, and Fig. 5 is a detail of the inner disks or washers.

The bearing consists of a nest of rollers rotata-bly supported in the customary cage, which comprises end rings 1 and cage pins 2, ol which there may be any suit-able number (six as shown) and which are spaced as desired. On each pin 2, is rotatably mounted a roller Up to this )Olllt the constructitni exhibits no novelty. t is in the mounting of these rollers and in the cl'licientcombination resulting therefrom that the invention lies. Each roller is by preference, but not of necessity, formed with a centralportion st of less outer diameter than the rest of the roller, constituting a. depression and breaking the roller into two acting surfaces The rollers are hollow being at all points of greater internal diameter than the cage pins, so that at no point dotheytouch the same. As shown and in the preferable embodiment of the invention, 0 the bore of the hollow roller is varied. to correspond roughly with the variation in its ex ternal form, and comprises a cavity 6 at each end and a connecting portion 7 of less internal diameter than that of the cavities. The material with which these cavities are filled is raw hide, the use of this material being one of the most important features of the. invention. Raw hide is es ec-ially suited to this use, being tough, urablc, noiseless, of

Specification of Letters Patent.

Application filed January 26, 1906. Serial No. 297,966.

' PatentedMay 5, 1908.

strength suflioient to meet all demands, and constituting a permanentlubricating element. Other materials have various defects, as incoinpressibility, insuflicient strength and toughness, absenceof lubricating qualities, etc. As pointed out, these defects are not any of them present in rawhide, the material I employ.

Anot her important feature of my invention is the manner in which the cavities are filled. F or this purpose are employed disks or washers fitting oosely on the pins and of slightly less external diameter than the internal diameter ol" the rollers, so that the relative movement may freely take place between all threeof these elements, viz., the pin, the disks, and the roller. This renders the rotation of the rollers much less rapid and re duces friction and wear.

The disks 8 within the roller are held in posit-ion by outer or end disks!) which have a suliiciently close .tit upon the pin to maintain substantially their relative position thereon. These end disks not only hold the, inner disks in position, but protect. the cage rings from being cut by the ends of the rollers, The. shoulders it) formed where the cavities 6 end and the connecting portion 7 of the roller bore begins restrain the disks from undue.

endwise movement in the other direction. These disks are capable of rotation relativeto each other to' equalize any strains in use or any inequalities in the various surfaces, and are therefore not tightly packed into the cavities. They are. however, placed there in snf iicient numbers and near enough together to sustain'the rollers effectively.

I. am aware that it is not new to employ in a roller bearing, a composite roller of steel lined with wood fiber, nor to protect the cage rings from the rollers by end washers. This has been done in the patent to Brooks, No. 642,204. But so far as I am aware, it is new to support a. rollerby internal disks witlrrespect to which the roller is free to move. and to make a bearing of this nature scll't-lubrieating by the use of raw hide.

hat I claim as new and desire to protect by Letters Patent, is z- 1. In a roller bearing, a cage comprising pins, disksfreeto rotate on said pins, and rollers supported by said disks and tree to rotate thereon, substantially as described.

:2. In a roller bearing, supporting pins, raw

disks, substantially as described.

v the diameter of the pins, raw hide disks between said pins and rollers to sustain said rollers 50 that they are always out of cortact with said pins but rotatable With respect to said disks and pins, substantially as described.

4. In a roller bearing, a supporting pin, a roller having cavities at each end thereof and a smaller connecting bore, all being of greater diameter than the pin, disks Within the eavities and rotatable with respect to the roller,

eee ear and eans fer retaining the se me in position, substantially as IiQSCIlbG-Ch 5. In a roller bearing, end rings supportplurality of disks rotatable on said pins and filling said cavities, said disks beingof less; external diameter than the internal diameter of the cavities to permit ,the rollers to rotate with respect to the disks.

Signed. by me at Chicago Illinois day of January 1906.

WILLIAM S. SHARPNEOK.

Witnesses ANNIE M. ADAMS, M. A. Bees.

this 23d 

